【作者】 徐波；

【导师】 蒋昌波；

【作者基本信息】 长沙理工大学 ， 港口海岸及近海工程， 2011， 硕士

【摘要】 由于库区水利工程建设规模的加大,存着着大量的有隐患的滑坡,滑坡下滑引起滑坡涌浪,将对库区两岸居民的生活、航运、过往的船只造成极大的威胁。滑坡涌浪带来的一系列问题已经引起了国家相关部门的极大重视。研究三维滑坡涌浪的产生及其传播的过程的规律和影响因素,对于滑坡涌浪灾害的预防及其相关防范工程的建设有着极大的意义。本文通过物理模型实验和数值模型实验进行计算和验证,对于两种体积相同形状不同的滑块从高度和坡角各不相同的滑坡上下滑时,引起的涌浪及其涌浪的传播过程进行了研究。在物理模型实验中,通过对实验数据进行分析,探讨了长梯形滑块和楔形体滑块分别不同高度的滑坡下滑之后引起涌浪首浪在时间上的差异;之后针对长梯形滑,分别研究了滑坡高度和坡角对涌浪的高度及其周期的影响;最后探讨了体积相同形状不同的滑坡对涌浪的高度及其周期的影响。(管)在数值模型中,采用FOLW3D软件,建立了基于VOF法追踪自由面的三维数值水槽模型,先对物理模型实验的结果进行验证,证明软件参数的设置及其选用方法的正确性;之后滑块下滑之后自由液面随时间的变化进行了研究,最后研究了不同高度的水面流场的异同。并对最终结果进行了可视化。更多还原

【Abstract】 Due to the increase of the size of the water project construction in the reservoir area, there exists a large number of landslide hazards.The surge caused by the landslide will cause serious threat to the people living in the both sides of the reservoir area.,shipping and passing ships. A series of problems caused by landslide surge have aroused the attention of the relevant departments of national. The study of the formation of three-dimensional landslide surge ,the law and impact factors of propagation has great significance to the prevention of the disaster landslide surge and construction projects related to prevention. In this paper, the study is conducted by physical modeTests and numerical simulations to calculate and verify the surge caused by slides and its propagation when the two sliders that being the same volume but different shapes slide from the slope that being the both different height and toe.In the physical model experiment,the differences in time of the first wave caused respectively by long trapezoidal slider and wedge slider shape decline at different height of landslide were researched through analysis experimental data.The effect of landslide’s slope and height to the cycle and height of waves caused by long trapezoidal sliders were studied respectively.Finally,the influence of the same volume but different shape landslide to the height and cycle of waves caused by sliders were discussed.Owning to FOLW3D software,it establishes the 3d numerical sink model which tracks free surface based on VOF method in numerical model.First,the physical results of model experiments are verified so as to prove the correctness of software parameter setting and selected methods;Then free liquid surface after slider gliding which changes with time were studied.Finally the similarities and differences of surface flow velocity field in different height are researched and the final results are visible.更多还原